Grade 7 | Unit 4 | Lesson 15: Error Intervals | Practice Problems

• About 2.6% error

• About 2.6% error

• About 2.6% error

The reading on a car’s speedometer has 1.6% maximum error. The speed limit on a road is 65 miles per hour. The speedometer reads 64 miles per hour. Is it possible that the car is going over the speed limit?

• Yes, the car might be going more than 65 mph

• No, the car might be going less than 65 mph

The reading on a car’s speedometer has 1.6% maximum error. The speed limit on a road is 65 miles per hour. The speedometer reads 66 miles per hour. Is the car definitely going over the speed limit?

• Yes, the car might be going more than 65 mph

• No, the car might be going less than 65 mph

Noah picked 3 kg of cherries. Jada picked half as many cherries as Noah. How many total kg of cherries did Jada and Noah pick?

Here is a shape with some measurements in cm. Complete the table showing the area of different scaled copies of the triangle. Is the relationship between the scale factor and the area of the scaled copy proportional?